경상북도 청도군, 운문호의 식물플랑크톤 우점종 변동과 수화현상의 수문학적 발생원인 (Changes of Dominant Species of Phytoplanktons and Hydrological Causes ofWater Bloom in the Lake Unmun, Cheongdo-gun, Gyeonsangbuk-do)

서지정보

· 발행기관 : 한국조류학회I
· 수록지 정보 : ALGAE / 22권 / 4호 / 261 ~ 271페이지
· 저자명 : 김미경, 이철희, 이순화

초록

The variations of species compositions, standing crops and seasonal succession of phytoplanktons including Cyanophyceae, Chlorophyceae and Bacillariophyceae were investigated with physico-chemical elements of water to clarify the causes of water bloom according to the water depth in the Lake Unmun. The increased amounts of turbidity, T-N, T-P and SS originated from heavy rain and typhoon in the middle of June provoked to produce
phytoplanktons. In July and August, the dominant species was Peridinium sp., while the subdominant species was Microcystis aeruginosa. In October, Aulacoseira distans was dominant and Asterionella formosa was subdominant. During the period of water shortage, the concentrated pollutants caused the decrease of precipitation, the long stagnation time of water body and the mixed pollutants by upwelling as decreasing water temperature could accelerate the water bloom. The preventives to decrease microalgal generation should be controled by the
stagnation time of water body by increasing outflow to intercept water bloom such as ulacoseira sp. in October as well as summer.

영어초록

The variations of species compositions, standing crops and seasonal succession of phytoplanktons including Cyanophyceae, Chlorophyceae and Bacillariophyceae were investigated with physico-chemical elements of water to clarify the causes of water bloom according to the water depth in the Lake Unmun. The increased amounts of turbidity, T-N, T-P and SS originated from heavy rain and typhoon in the middle of June provoked to produce
phytoplanktons. In July and August, the dominant species was Peridinium sp., while the subdominant species was Microcystis aeruginosa. In October, Aulacoseira distans was dominant and Asterionella formosa was subdominant. During the period of water shortage, the concentrated pollutants caused the decrease of precipitation, the long stagnation time of water body and the mixed pollutants by upwelling as decreasing water temperature could accelerate the water bloom. The preventives to decrease microalgal generation should be controled by the
stagnation time of water body by increasing outflow to intercept water bloom such as ulacoseira sp. in October as well as summer.

참고자료

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